Ok, what youve got is a marketing problem.
And, like most marketing problems, its best if we start by looking at the strategic level.
I often say there are 3 parts to any marketing activity:
(1) the message
(2) the market
(3) the medium
So, lets look at those.
The Message: this is why they should use you over your competition.
In a situation like this, I think we should assume that theres already some mechanism in place to deal with translation work. Whenever translation is required, they know what to do to get it done.
Assuming its not in house, this could be a preferred suppliers list. And this list may be one company or a number of companies.
But, chances are, theyve got a business or businesses they already go to.
If theres a number of businesses on the list, thats obviously in your favour and it would be far easier to get accepted onto the list. Once on, your problem will be to move up the list, but thats a different (and easier) problem.
If theyve just got one business they use, its going to be far harder.
Youve got to be (able to explain why youre) better for them than the people theyre already using.
Now, if theyre truly happy with their current supplier, unless you can massively undercut their prices (while being able to demonstrate that theres no loss in quality), youre probably wasting your time.
However, if theres something theyre dissatisfied with, and you can give them what they want, then youve a chance to get on the list.
If your message is a solution to their dissatisfaction, youve a message thats going to interest them.
However, the best message in the world is of no value if delivered to the wrong market.
The Market: this is the question youve brought to the forum: how to identify the market (i.e. go in at the right level).
My first suggestion here would be to look at the legal firms youve done work for and identify the people who green lighted the decision to hire you.
How do those firms normally choose translators? Who makes that choice? Do they have preferred suppliers lists? If so, how do businesses get on them?
(Are you on them?)
That will give you a profile of who youre looking to target in the prospect firms.
It may be a job title (though, for legal firms, job titles are often uninformative). It may be a department with the word international in the title.
Or it may just be someone who, for no reason that makes sense, had the buck land on his desk, and hes become the custodian of the list.
Lets assume the worst. Lets assume that there are no signposts towards the person who chooses the translators.
In which case, Id start at the bottom. Id call up the business and talk to the receptionist and explain that Id like to know the name of the person who chooses the translators, as Id like to send him a letter.
The receptionist will probably not know who that is.
So, Id talk her through the process and have her put me through to someone legal whos had a translation done recently. Then Id find out from them how they ended up using that particular translator (i.e. Id identify their mechanism).
And then Id keep trying to go to the source of the mechanism.
Charming persistence should come up with a name. I might even get a chance to talk to that person there and then.
Either way, Id then have a market to deliver my message to.
Hope this helps.
Steve